China plastic packaging mascara tube with aluminum screw cap. It comes with an inner plug to make sure a nice seal and avoids leaking. mascara with tubes helps increase the bond between the lash and the individual lashes of the mascara. For a more natural lash lift, tubes help keep the lashes in good shape as they are applied to the individual lash. Much more good quality mascara tubes at www.zmcos.com. Square shape, round shape, or unique shape, plastic or aluminum material tube for your choosing.